Load Specifications
Load data in caliber .357 Maximum with .357 | 147gr | H&N KS HS bullet and 63 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Baschieri & Pellagri 102 Pistol, Vihtavuori N32C Tin Star and ReloadSwiss RS 14.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 60% and propellant combustion ≥ 80%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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Max Load - Barrel Length: 7.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 4100* | <<locked>> | 84% | 37,057 psi | 82% | 1696 fps | 89.6% |
| Accurate No. 2² | <<locked>> | 64% | 36,042 psi | 80% | 1483 fps | 100% |
| Accurate No. 7² | <<locked>> | 64% | 36,782 psi | 82% | 1680 fps | 98.5% |
| Accurate No. 9² | <<locked>> | 72% | 37,637 psi | 84% | 1693 fps | 95.1% |
| Accurate Solo 1000² | <<locked>> | 68% | 37,985 psi | 84% | 1394 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 39,189 psi | 87% | 1463 fps | 100% |
| Accurate TCM² | <<locked>> | 72% | 37,623 psi | 84% | 1690 fps | 96.1% |
| ADI AP 100 | <<locked>> | 84% | 37,753 psi | 84% | 1617 fps | 100% |
| ADI APS 350² | <<locked>> | 68% | 37,304 psi | 83% | 1286 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 39,436 psi | 88% | 1345 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 39,943 psi | 89% | 1388 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 40,480 psi | 90% | 1437 fps | 100% |
| Alliant 2400* | <<locked>> | 80% | 35,868 psi | 80% | 1690 fps | 92% |
| Alliant BE-86² | <<locked>> | 72% | 40,277 psi | 90% | 1460 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 84% | 37,739 psi | 84% | 1690 fps | 98% |
| Alliant BULLSEYE² | <<locked>> | 64% | 39,827 psi | 89% | 1558 fps | 100% |
| Alliant Green Dot² | <<locked>> | 68% | 37,304 psi | 83% | 1404 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 38,551 psi | 86% | 1535 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 36,869 psi | 82% | 1657 fps | 100% |
| Alliant RED DOT² | <<locked>> | 72% | 38,986 psi | 87% | 1394 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 72% | 40,074 psi | 89% | 1562 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 37,855 psi | 84% | 1394 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 37,246 psi | 83% | 1394 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 38,159 psi | 85% | 1411 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 39,218 psi | 87% | 1339 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 92% | 37,971 psi | 84% | 1804 fps | 93.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 22,408 psi | 50% | 1129 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 37,028 psi | 82% | 1453 fps | 100% |
| Lovex D037.1² | <<locked>> | 64% | 36,782 psi | 82% | 1680 fps | 98.5% |
| Lovex D037.2² | <<locked>> | 72% | 38,130 psi | 85% | 1703 fps | 95.3% |
| Lovex S020² | <<locked>> | 64% | 38,101 psi | 85% | 1486 fps | 100% |
| Maxam CSB 1² | <<locked>> | 76% | 40,205 psi | 89% | 1473 fps | 100% |
| Maxam CSB 2² | <<locked>> | 68% | 36,970 psi | 82% | 1424 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 39,943 psi | 89% | 1444 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 37,826 psi | 84% | 1398 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 36,825 psi | 82% | 1335 fps | 100% |
| Ramshot Enforcer* | <<locked>> | 80% | 35,795 psi | 80% | 1696 fps | 93.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 20,885 psi | 46% | 1138 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 39,784 psi | 88% | 1539 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 72% | 39,175 psi | 87% | 1699 fps | 99.7% |
| Rottweil P 806² | <<locked>> | 72% | 37,028 psi | 82% | 1637 fps | 100% |
| Shooters World Heavy Pistol² | <<locked>> | 72% | 38,130 psi | 85% | 1703 fps | 95.3% |
| Shooters World Major Pistol² | <<locked>> | 64% | 36,782 psi | 82% | 1680 fps | 98.5% |
| SNPE Vectan A0² | <<locked>> | 72% | 36,492 psi | 81% | 1470 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 39,566 psi | 88% | 1453 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 39,015 psi | 87% | 1470 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 40,074 psi | 89% | 1352 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 28,224 psi | 63% | 1552 fps | 91.6% |
| SNPE Vectan BA7 1/2² | <<locked>> | 76% | 36,941 psi | 82% | 1552 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 38,406 psi | 85% | 1467 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 38,595 psi | 86% | 1667 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 37,347 psi | 83% | 1519 fps | 100% |
| Somchem MS200² | <<locked>> | 72% | 40,553 psi | 90% | 1532 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 72% | 40,030 psi | 89% | 1604 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 84% | 40,176 psi | 89% | 1696 fps | 99.9% |
| Vihtavuori N105 | <<locked>> | 84% | 36,840 psi | 82% | 1680 fps | 100% |
| Vihtavuori N110*ᴾ | <<locked>> | 100% | 35,940 psi | 80% | 1713 fps | 92.8% |
| Vihtavuori N320² | <<locked>> | 64% | 37,666 psi | 84% | 1398 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 39,508 psi | 88% | 1339 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 38,130 psi | 85% | 1460 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 36,883 psi | 82% | 1486 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 39,247 psi | 87% | 1588 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 38,203 psi | 85% | 1470 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 7.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 4100* | <<locked>> | 80% | 32,401 psi | 72% | 1617 fps | 87.2% |
| Accurate No. 2² | <<locked>> | 60% | 32,010 psi | 71% | 1427 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 31,894 psi | 71% | 1598 fps | 97% |
| Accurate No. 9*² | <<locked>> | 60% | 24,004 psi | 53% | 1434 fps | 87.8% |
| Accurate Solo 1000² | <<locked>> | 60% | 31,038 psi | 69% | 1302 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 28,108 psi | 63% | 1316 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 24,294 psi | 54% | 1437 fps | 89.4% |
| ADI AP 100² | <<locked>> | 60% | 19,711 psi | 44% | 1280 fps | 97.5% |
| ADI APS 350² | <<locked>> | 60% | 30,806 psi | 69% | 1198 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 30,240 psi | 67% | 1224 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 30,298 psi | 67% | 1260 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 33,344 psi | 74% | 1345 fps | 100% |
| Alliant 2400*² | <<locked>> | 72% | 28,007 psi | 62% | 1542 fps | 87.7% |
| Alliant BE-86² | <<locked>> | 60% | 29,109 psi | 65% | 1316 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 60% | 18,594 psi | 41% | 1286 fps | 87.5% |
| Alliant BULLSEYE² | <<locked>> | 60% | 35,897 psi | 80% | 1503 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 30,560 psi | 68% | 1309 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 21,060 psi | 47% | 1253 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 29,022 psi | 65% | 1519 fps | 99.8% |
| Alliant RED DOT² | <<locked>> | 60% | 29,298 psi | 65% | 1263 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 28,964 psi | 64% | 1401 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 30,371 psi | 68% | 1296 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 8.6 gr | 60% | 20,218 psi | 45% | 1142 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 33,634 psi | 75% | 1358 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 25,266 psi | 56% | 1145 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 80% | 24,323 psi | 54% | 1539 fps | 85.5% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 10,443 psi | 23% | 856 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 33,373 psi | 74% | 1404 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 31,894 psi | 71% | 1598 fps | 97% |
| Lovex D037.2*² | <<locked>> | 60% | 24,729 psi | 55% | 1453 fps | 88.4% |
| Lovex S020² | <<locked>> | 60% | 33,576 psi | 75% | 1427 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 26,324 psi | 59% | 1280 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 29,776 psi | 66% | 1325 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 29,515 psi | 66% | 1306 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 30,951 psi | 69% | 1306 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 33,547 psi | 75% | 1293 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 68% | 23,525 psi | 52% | 1453 fps | 85.6% |
| ReloadSwiss RS 14² | 5.1 gr | 60% | 9,921 psi | 22% | 866 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 28,065 psi | 62% | 1378 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 26,614 psi | 59% | 1480 fps | 96.5% |
| Rottweil P 806² | <<locked>> | 60% | 24,221 psi | 54% | 1427 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 24,729 psi | 55% | 1453 fps | 88.4% |
| Shooters World Major Pistol² | <<locked>> | 60% | 31,894 psi | 71% | 1598 fps | 97% |
| SNPE Vectan A0² | <<locked>> | 60% | 26,353 psi | 59% | 1319 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 31,705 psi | 71% | 1352 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 31,053 psi | 69% | 1365 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 33,185 psi | 74% | 1266 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 88% | 20,436 psi | 45% | 1368 fps | 85.2% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 23,366 psi | 52% | 1329 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 30,763 psi | 68% | 1362 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 33,475 psi | 74% | 1594 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 32,779 psi | 73% | 1457 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 29,443 psi | 65% | 1378 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 27,702 psi | 62% | 1424 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 19,276 psi | 43% | 1299 fps | 92.8% |
| Vihtavuori N105*² | <<locked>> | 60% | 16,491 psi | 37% | 1270 fps | 94.2% |
| Vihtavuori N110* | <<locked>> | 88% | 24,903 psi | 55% | 1503 fps | 86.1% |
| Vihtavuori N320² | <<locked>> | 60% | 33,649 psi | 75% | 1345 fps | 100% |
| Vihtavuori N32C Tin Star² | 6.7 gr | 60% | 17,303 psi | 38% | 1010 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 33,649 psi | 75% | 1401 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 29,254 psi | 65% | 1381 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 24,395 psi | 54% | 1362 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 27,891 psi | 62% | 1329 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
* not dangerous but load has suboptimal powder burnt with possible characteristics such as extensive muzzle flash or inaccurate loads.
² fill rate low - you might want to consider using a filler to ensure proper ignition.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 63 powders for .357 Maximum loaded with the .357 | 147gr | H&N KS HS. Hodgdon LilGun delivers the highest muzzle velocity at 1,804 fps; across all powders the maximum-charge window runs from 1,129 fps to 1,804 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 16 of the 63 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (310 MPa), the top charges use 46–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14, SNPE Vectan BA6 1/2 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Baschieri & Pellagri 102 Pistol, Vihtavuori N32C Tin Star, ReloadSwiss RS 14 rank at the top here: for .357 Maximum with the .357 | 147gr | H&N KS HS they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4100, Alliant 2400, Hodgdon LilGun burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N32C Tin Star stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.